The robot was one of a number of smart devices unveiled by Samsung – also among them was Bot Care, which can track vital signs using a built-in fingerprint scanner (John Locher/AP)

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Samsung also launched the Family Hub smart fridge, featuring virtual assistant Bixby, which will allow users to control other smart appliances around the home, including speakers and robot vacuum cleaners (John Locher/AP)

Google took visitors for a ride, literally, as it showcased its voice-enabled digital assistant technology (Ross D Franklin/AP)

The Breadbot automatic bread-baking machine was unveiled by Wilkinson Baking Company (John Locher/AP)